Home / 2,638.44-3,949.16-1,816.29

Finding the Fourth Proportional to 2,638.44, 3,949.16 and 1,816.29

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Solution

The fourth proportional to 2,638.44, 3,949.16 and 1,816.29 is: 2,718.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.44 : 3,949.16 = 1,816.29 : x
  2. Step 2: Convert to fraction form
    2,638.44/3,949.16 = 1,816.29/x
  3. Step 3: Cross multiply
    2,638.44x = 3,949.16 × 1,816.29
  4. Step 4: Simplify right side
    2,638.44x = 7,172,810.73
  5. Step 5: Solve for x
    x = 7,172,810.73/2,638.44
  6. Step 6: Final answer
    x = 2,718.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.